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Finding the Fourth Proportional to 1,921.84, 2,882.94 and 622.96

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Solution

The fourth proportional to 1,921.84, 2,882.94 and 622.96 is: 934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.84 : 2,882.94 = 622.96 : x
  2. Step 2: Convert to fraction form
    1,921.84/2,882.94 = 622.96/x
  3. Step 3: Cross multiply
    1,921.84x = 2,882.94 × 622.96
  4. Step 4: Simplify right side
    1,921.84x = 1,795,956.30
  5. Step 5: Solve for x
    x = 1,795,956.30/1,921.84
  6. Step 6: Final answer
    x = 934.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.